.github/dependabot.yml

@@ -1,16 +1,13 @@
+
 version: 2
 updates:
   - package-ecosystem: github-actions
     directory: "/"
     schedule:
       interval: daily
-      time: "11:00"
     open-pull-requests-limit: 10
   - package-ecosystem: gomod
     directory: "/"
     schedule:
       interval: daily
-      time: "11:00"
     open-pull-requests-limit: 10
-    labels:
-      - T:dependencies

.github/workflows/codeql-analysis.yml

@@ -0,0 +1,73 @@
+# For most projects, this workflow file will not need changing; you simply need
+# to commit it to your repository.
+#
+# You may wish to alter this file to override the set of languages analyzed,
+# or to provide custom queries or build logic.
+#
+# ******** NOTE ********
+# We have attempted to detect the languages in your repository. Please check
+# the `language` matrix defined below to confirm you have the correct set of
+# supported CodeQL languages.
+#
+name: "CodeQL"
+
+on:
+  push:
+    branches: [ "main" ]
+  pull_request:
+    # The branches below must be a subset of the branches above
+    branches: [ "main" ]
+  schedule:
+    - cron: '26 1 * * 5'
+
+jobs:
+  analyze:
+    name: Analyze
+    runs-on: ubuntu-latest
+    container: ghcr.io/cosmos/cosmos-db/build-test:latest
+    permissions:
+      actions: read
+      contents: read
+      security-events: write
+
+    strategy:
+      fail-fast: false
+      matrix:
+        language: [ 'go' ]
+        # CodeQL supports [ 'cpp', 'csharp', 'go', 'java', 'javascript', 'python', 'ruby' ]
+        # Learn more about CodeQL language support at https://aka.ms/codeql-docs/language-support
+
+    steps:
+    - name: Checkout repository
+      uses: actions/checkout@v3
+
+    # Initializes the CodeQL tools for scanning.
+    - name: Initialize CodeQL
+      uses: github/codeql-action/init@v2
+      with:
+        languages: ${{ matrix.language }}
+        # If you wish to specify custom queries, you can do so here or in a config file.
+        # By default, queries listed here will override any specified in a config file.
+        # Prefix the list here with "+" to use these queries and those in the config file.
+
+        # Details on CodeQL's query packs refer to : https://docs.github.com/en/code-security/code-scanning/automatically-scanning-your-code-for-vulnerabilities-and-errors/configuring-code-scanning#using-queries-in-ql-packs
+        queries: security-extended,security-and-quality
+
+
+    # Autobuild attempts to build any compiled languages  (C/C++, C#, or Java).
+    # If this step fails, then you should remove it and run the build manually (see below)
+    - name: Autobuild
+      uses: github/codeql-action/autobuild@v2
+
+    # ℹ️ Command-line programs to run using the OS shell.
+    # 📚 See https://docs.github.com/en/actions/using-workflows/workflow-syntax-for-github-actions#jobsjob_idstepsrun
+
+    #   If the Autobuild fails above, remove it and uncomment the following three lines. 
+    #   modify them (or add more) to build your code if your project, please refer to the EXAMPLE below for guidance.
+
+    # - run: |
+    #   echo "Run, Build Application using script"
+    #   ./location_of_script_within_repo/buildscript.sh
+
+    - name: Perform CodeQL Analysis
+      uses: github/codeql-action/analyze@v2

.github/workflows/docker.yml

@@ -1,56 +1,26 @@
-# This workflow builds and pushes a new version of the build container image
-# when the tools directory changes on master. Edit tools/Dockerfile.
-#
-# This workflow does not push a new image until it is merged, so tests that
-# depend on changes in this image will not pass until this workflow succeeds.
-# For that reason, changes here should be done in a separate PR in advance of
-# work that depends on them.
+name: build docker image
 
-name: Build & Push TM-DB-Testing
 on:
-  pull_request:
-    paths:
-      - "tools/*"
+  workflow_dispatch:
   push:
-    branches:
-      - master
-    paths:
-      - "tools/*"
+  pull_request:
 
 jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
-      - name: Prepare
-        id: prep
-        run: |
-          DOCKER_IMAGE=tendermintdev/docker-tm-db-testing
-          VERSION=noop
-          if [[ $GITHUB_REF == refs/tags/* ]]; then
-            VERSION=${GITHUB_REF#refs/tags/}
-          elif [[ $GITHUB_REF == refs/heads/* ]]; then
-            VERSION=$(echo ${GITHUB_REF#refs/heads/} | sed -r 's#/+#-#g')
-            if [ "${{ github.event.repository.default_branch }}" = "$VERSION" ]; then
-              VERSION=latest
-            fi
-          fi
-          TAGS="${DOCKER_IMAGE}:${VERSION}"
-          echo ::set-output name=tags::${TAGS}
-
-      - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v2
+      - name: Checkout
+        uses: actions/checkout@v3
 
-      - name: Login to DockerHub
+      - name: Login to GitHub Container Registry
         uses: docker/login-action@v2
         with:
-          username: ${{ secrets.DOCKERHUB_USERNAME }}
-          password: ${{ secrets.DOCKERHUB_TOKEN }}
+          registry: ghcr.io
+          username: ${{ github.repository_owner }}
+          password: ${{ secrets.GITHUB_TOKEN }}
 
-      - name: Publish to Docker Hub
+      - name: Build and push
         uses: docker/build-push-action@v3
         with:
-          context: ./tools
-          file: ./tools/Dockerfile
           push: ${{ github.event_name != 'pull_request' }}
-          tags: ${{ steps.prep.outputs.tags }}
+          tags: ghcr.io/cosmos/cosmos-db/build-test:latest

.github/workflows/lint.yml

@@ -7,13 +7,9 @@ on:
 
 jobs:
   golangci:
-    # We need to run the linter on the same image we use for building, since it
-    # needs the C libraries installed for the dependencies to typecheck.
     runs-on: ubuntu-latest
-    container: tendermintdev/docker-tm-db-testing
+    container: ghcr.io/cosmos/cosmos-db/build-test:latest
     steps:
       - uses: actions/checkout@v3
       - uses: golangci/golangci-lint-action@v3.2.0
-        with:
-          args: --timeout 10m
-          github-token: ${{ secrets.github_token }}
+

.github/workflows/test.yml

@@ -0,0 +1,14 @@
+name: Test
+on:
+  push:
+    branches:
+      - master
+  pull_request:
+jobs:
+  Test:
+    runs-on: ubuntu-latest
+    container: ghcr.io/cosmos/cosmos-db/build-test:latest
+    steps:
+      - uses: actions/checkout@v3
+      - name: run tests
+        run: go test ./... -mod=readonly -timeout 8m -race -coverprofile=coverage.txt -covermode=atomic -tags=memdb,goleveldb,cleveldb,rocksdb -v

.gitignore

@@ -1,16 +1,10 @@
-# Binaries for programs and plugins
-*.exe
-*.exe~
-*.dll
-*.so
-*.dylib
-
 # Test binary, build with `go test -c`
 *.test
 
 # Output of the go coverage tool, specifically when used with LiteIDE
 *.out
 
 .idea
-.vscode
+.vscode/*
+.vscode/settings.json
 vendor/*

.gitpod.yml

@@ -2,6 +2,5 @@
 # Please adjust to your needs (see https://www.gitpod.io/docs/config-gitpod-file)
 # and commit this file to your remote git repository to share the goodness with others.
 
-image: tendermintdev/docker-tm-db-testing
-
+image: ghcr.io/cosmos/cosmos-db/build-test:latest
 # this means that there's a one-click known good environment available to developers.

.golangci.yml

@@ -32,18 +32,3 @@ run:
   build-tags:
     - cleveldb
     - rocksdb
-    - badgerdb
-    - boltdb
-
-issues:
-  exclude-rules:
-    - path: _test\.go
-      linters:
-        - gosec
-linters-settings:
-  maligned:
-    suggest-new: true
-  errcheck:
-    # report about assignment of errors to blank identifier: `num, _ := strconv.Atoi(numStr)`;
-    # default is false: such cases aren't reported by default.
-    check-blank: true

.vscode/settings.json

@@ -0,0 +1,6 @@
+{
+    "go.buildTags": "cleveldb rocksdb pebbledb",
+    "go.lintTool": "golangci-lint",
+    "go.lintOnSave": "workspace",
+    "go.formatTool": "gofumpt"
+}

CHANGELOG.md

@@ -2,196 +2,4 @@
 
 ## Unreleased
 
-- remove mutex from prefixdb
-
-## 0.6.7
-
-**2022-2-21**
-
-- Use cosmos/rocksdb instead of techbot/rocksdb
-- Add `ForceCopmact` to goleveldb database
-
-## 0.6.6
-
-**2021-11-08**
-
-**Important note:** Version v0.6.5 was accidentally tagged and should be
-avoided.  This version is identical to v0.6.4 in package structure and API, but
-has updated the version marker so that normal `go get` upgrades will not
-require modifying existing use of v0.6.4.
-
-### Version bumps (since v0.6.4)
-
-- Bump grpc from to 1.42.0.
-- Bump dgraph/badger to v2 2.2007.3.
-- Bump go.etcd.io/bbolt to 1.3.6.
-
-## 0.6.5
-
-**2021-08-04**
-
-**Important note**: This version was tagged by accident, and should not be
-used. The tag now points to the [package-reorg
-branch](https://github.com/tendermint/tm-db/tree/package-reorg) so that
-any existing dependencies should not break.
-
-## 0.6.4
-
-**2021-02-09**
-
-Bump protobuf to 1.3.2 and grpc to 1.35.0.
-
-## 0.6.3
-
-**2020-11-10**
-
-### Improvements
-
-- [goleveldb] [\#134](https://github.com/tendermint/tm-db/pull/134) Improve iterator performance by bounding underlying iterator range (@klim0v)
-
-## 0.6.2
-
-**2020-08-27**
-
-Bump grpc, badger and goleveldb (see versions in go.mod file)
-
-## 0.6.1
-
-**2020-08-12**
-
-### Improvements
-
-- [\#115](https://github.com/tendermint/tm-db/pull/115) Add a `BadgerDB` backend with build tag `badgerdb` (@mvdan)
-
-## 0.6.0
-
-**2020-06-24**
-
-### Breaking Changes
-
-- [\#99](https://github.com/tendermint/tm-db/pull/99) Keys can no longer be `nil` or empty, and values can no longer be `nil` (@erikgrinaker)
-
-- [\#98](https://github.com/tendermint/tm-db/pull/98) `NewDB` now returns an error instead of panicing (@erikgrinaker)
-
-- [\#96](https://github.com/tendermint/tm-db/pull/96) `Batch.Set()`, `Delete()`, and `Close()` may now error (@erikgrinaker)
-
-- [\#97](https://github.com/tendermint/tm-db/pull/97) `Iterator.Close()` may now error (@erikgrinaker)
-
-- [\#97](https://github.com/tendermint/tm-db/pull/97) Many iterator panics are now exposed via `Error()` instead (@erikgrinaker)
-
-- [\#96](https://github.com/tendermint/tm-db/pull/96) The `SetDeleter` interface has been removed (@erikgrinaker)
-
-### Bug Fixes
-
-- [\#97](https://github.com/tendermint/tm-db/pull/97) `RemoteDB` iterators are now correctly primed with the first item when created, without calling `Next()` (@erikgrinaker)
-
-## 0.5.2
-
-**2020-11-10**
-
-### Improvements
-
-- [goleveldb] [\#134](https://github.com/tendermint/tm-db/pull/134) Improve iterator performance by bounding underlying iterator range (@klim0v)
-
-## 0.5.1
-
-**2020-03-30**
-
-### Bug Fixes
-
-- [boltdb] [\#81](https://github.com/tendermint/tm-db/pull/81) Use correct import path go.etcd.io/bbolt
-
-## 0.5.0
-
-**2020-03-11**
-
-### Breaking Changes
-
-- [\#71](https://github.com/tendermint/tm-db/pull/71) Closed or written batches can no longer be reused, all non-`Close()` calls will panic
-
-- [memdb] [\#74](https://github.com/tendermint/tm-db/pull/74) `Iterator()` and `ReverseIterator()` now take out database read locks for the duration of the iteration
-
-- [memdb] [\#56](https://github.com/tendermint/tm-db/pull/56) Removed some exported methods that were mainly meant for internal use: `Mutex()`, `SetNoLock()`, `SetNoLockSync()`, `DeleteNoLock()`, and `DeleteNoLockSync()`
-
-### Improvements
-
-- [memdb] [\#53](https://github.com/tendermint/tm-db/pull/53) Use a B-tree for storage, which significantly improves range scan performance
-
-- [memdb] [\#56](https://github.com/tendermint/tm-db/pull/56) Use an RWMutex for improved performance with highly concurrent read-heavy workloads
-
-### Bug Fixes
-
-- [boltdb] [\#69](https://github.com/tendermint/tm-db/pull/69) Properly handle blank keys in iterators
-
-- [cleveldb] [\#65](https://github.com/tendermint/tm-db/pull/65) Fix handling of empty keys as iterator endpoints
-
-## 0.4.1
-
-**2020-2-26**
-
-### Breaking Changes
-
-- [fsdb] [\#43](https://github.com/tendermint/tm-db/pull/43) Remove FSDB
-
-### Bug Fixes
-
-- [boltdb] [\#45](https://github.com/tendermint/tm-db/pull/45) Bring BoltDB to adhere to the db interfaces
-
-## 0.4
-
-**2020-1-7**
-
-### BREAKING CHANGES
-
-- [\#30](https://github.com/tendermint/tm-db/pull/30) Interface Breaking, Interfaces return errors instead of panic:
-  - Changes to function signatures:
-    - DB interface:
-      - `Get([]byte) ([]byte, error)`
-      - `Has(key []byte) (bool, error)`
-      - `Set([]byte, []byte) error`
-      - `SetSync([]byte, []byte) error`
-      - `Delete([]byte) error`
-      - `DeleteSync([]byte) error`
-      - `Iterator(start, end []byte) (Iterator, error)`
-      - `ReverseIterator(start, end []byte) (Iterator, error)`
-      - `Close() error`
-      - `Print() error`
-    - Batch interface:
-      - `Write() error`
-      - `WriteSync() error`
-    - Iterator interface:
-      - `Error() error`
-
-### IMPROVEMENTS
-
-- [remotedb] [\#34](https://github.com/tendermint/tm-db/pull/34) Add proto file tests and regenerate remotedb.pb.go
-
-## 0.3
-
-**2019-11-18**
-
-Special thanks to external contributors on this release:
-
-### BREAKING CHANGES
-
-- [\#26](https://github.com/tendermint/tm-db/pull/26/files) Rename `DBBackendtype` to `BackendType`
-
-## 0.2
-
-**2019-09-19**
-
-Special thanks to external contributors on this release: @stumble
-
-### Features
-
-- [\#12](https://github.com/tendermint/tm-db/pull/12) Add `RocksDB` (@stumble)
-
-## 0.1
-
-**2019-07-16**
-
-Special thanks to external contributors on this release:
-
-### Initial Release
-
-- `db`, `random.go`, `bytes.go` and `os.go` from the tendermint repo.
+- Removed Badger & Boltdb

Dockerfile

@@ -0,0 +1,5 @@
+# This file makes a development and test environment that includes the latest versions of relevant databases.
+
+FROM archlinux
+
+RUN pacman -Syyu --noconfirm go base-devel rocksdb leveldb git

Makefile

@@ -0,0 +1,41 @@
+GOTOOLS = github.com/golangci/golangci-lint/cmd/golangci-lint
+PACKAGES=$(shell go list ./...)
+INCLUDE = -I=${GOPATH}/src/github.com/tendermint/tm-db -I=${GOPATH}/src -I=${GOPATH}/src/github.com/gogo/protobuf/protobuf
+
+export GO111MODULE = on
+
+all: lint test
+
+### go tests
+## By default this will only test memdb, goleveldb, and pebbledb, which do not require cgo
+test:
+	@echo "--> Running go test"
+	@go test $(PACKAGES) -tags pebbledb -v
+
+test-cleveldb:
+	@echo "--> Running go test"
+	@go test $(PACKAGES) -tags cleveldb -v
+
+test-rocksdb:
+	@echo "--> Running go test"
+	@go test $(PACKAGES) -tags rocksdb -v
+
+test-pebble:
+	@echo "--> Running go test"
+	@go test $(PACKAGES) -tags pebbledb -v
+
+
+test-all:
+	@echo "--> Running go test"
+	@go test $(PACKAGES) -tags cleveldb,rocksdb,pebbledb -v
+
+lint:
+	@echo "--> Running linter"
+	@golangci-lint run
+	@go mod verify
+.PHONY: lint
+
+format:
+	find . -name '*.go' -type f -not -path "*.git*"  -not -name '*.pb.go' -not -name '*pb_test.go' | xargs gofumpt -w -l .
+.PHONY: format
+

README.md

@@ -1,18 +1,18 @@
-# Tendermint DB 
-
-[![version](https://img.shields.io/github/tag/tendermint/tm-db.svg)](https://github.com/tendermint/tm-db/releases/latest)
-[![license](https://img.shields.io/github/license/tendermint/tm-db.svg)](https://github.com/tendermint/tm-db/blob/master/LICENSE)
-[![API Reference](https://camo.githubusercontent.com/915b7be44ada53c290eb157634330494ebe3e30a/68747470733a2f2f676f646f632e6f72672f6769746875622e636f6d2f676f6c616e672f6764646f3f7374617475732e737667)](https://pkg.go.dev/github.com/tendermint/tm-db)
-[![codecov](https://codecov.io/gh/tendermint/tm-db/branch/master/graph/badge.svg)](https://codecov.io/gh/tendermint/tm-db)
-![Lint](https://github.com/tendermint/tm-db/workflows/Lint/badge.svg?branch=master)
-![Test](https://github.com/tendermint/tm-db/workflows/Test/badge.svg?branch=master)
+# Cosmos DB 
+
+[![version](https://img.shields.io/github/tag/cosmos/cosmos-db.svg)](https://github.com/cosmos/cosmos-db/releases/latest)
+[![license](https://img.shields.io/github/license/cosmos/cosmos-db.svg)](https://github.com/cosmos/cosmos-db/blob/master/LICENSE)
+[![API Reference](https://camo.githubusercontent.com/915b7be44ada53c290eb157634330494ebe3e30a/68747470733a2f2f676f646f632e6f72672f6769746875622e636f6d2f676f6c616e672f6764646f3f7374617475732e737667)](https://pkg.go.dev/github.com/cosmos/cosmos-db)
+[![codecov](https://codecov.io/gh/cosmos/cosmos-db/branch/master/graph/badge.svg)](https://codecov.io/gh/cosmos/cosmos-db)
+![Lint](https://github.com/cosmos/cosmos-db/workflows/Lint/badge.svg?branch=master)
+![Test](https://github.com/cosmos/cosmos-db/workflows/Test/badge.svg?branch=master)
 [![Discord chat](https://img.shields.io/discord/669268347736686612.svg)](https://discord.gg/AzefAFd)
 
 Common database interface for various database backends. Primarily meant for applications built on [Tendermint](https://github.com/tendermint/tendermint), such as the [Cosmos SDK](https://github.com/cosmos/cosmos-sdk), but can be used independently of these as well.
 
 ### Minimum Go Version
 
-Go 1.13+
+Go 1.19+
 
 ## Supported Database Backends
 
@@ -22,18 +22,12 @@ Go 1.13+
 
 - **[LevelDB](https://github.com/google/leveldb) [experimental]:** A [Go wrapper](https://github.com/jmhodges/levigo) around [LevelDB](https://github.com/google/leveldb). Uses LSM-trees for on-disk storage, which have good performance for write-heavy workloads, particularly on spinning disks, but requires periodic compaction to maintain decent read performance and reclaim disk space. Does not support transactions.
 
-- **[BoltDB](https://github.com/etcd-io/bbolt) [experimental]:** A [fork](https://github.com/etcd-io/bbolt) of [BoltDB](https://github.com/boltdb/bolt). Uses B+trees for on-disk storage, which have good performance for read-heavy workloads and range scans. Supports serializable ACID transactions.
-
 - **[RocksDB](https://github.com/cosmos/gorocksdb) [experimental]:** A [Go wrapper](https://github.com/cosmos/gorocksdb) around [RocksDB](https://rocksdb.org). Similarly to LevelDB (above) it uses LSM-trees for on-disk storage, but is optimized for fast storage media such as SSDs and memory. Supports atomic transactions, but not full ACID transactions.
 
-- **[BadgerDB](https://github.com/dgraph-io/badger) [experimental]:** A key-value database written as a pure-Go alternative to e.g. LevelDB and RocksDB, with LSM-tree storage. Makes use of multiple goroutines for performance, and includes advanced features such as serializable ACID transactions, write batches, compression, and more.
-
 ## Meta-databases
 
 - **PrefixDB [stable]:** A database which wraps another database and uses a static prefix for all keys. This allows multiple logical databases to be stored in a common underlying databases by using different namespaces. Used by the Cosmos SDK to give different modules their own namespaced database in a single application database.
 
-- **RemoteDB [experimental]:** A database that connects to distributed Tendermint db instances via [gRPC](https://grpc.io/). This can help with detaching difficult deployments such as LevelDB, and can also ease dependency management for Tendermint developers.
-
 ## Tests
 
 To test common databases, run `make test`. If all databases are available on the local machine, use `make test-all` to test them all.

docs/how_to_release.md → RELEASING.md

@@ -1,22 +1,22 @@
-# How To Release tm db
+# How To Release cosmos-db
 
-This document provides a step-by-step guide for creating a release of tm-db.
+This document provides a step-by-step guide for creating a release of cosmos-db.
 
 ## 1. Update the changelog
 
 Open the `CHANGELOG.md` at the root of the repository. 
-Amend the top of this file with a section for the latest version (0.6.x etc).
+Amend the top of this file with a section for the latest version (eg: v1.0.x).
 Be sure to include any bug fixes, improvements, dependency upgrades, and breaking changes included in this version. 
 (It's OK to exclude changes to tooling dependencies, like updates to Github Actions.)
 Finally, create a pull request for the changelog update.
 Once the tests pass and the pull request is approved, merge the change into master.
 
 ## 2. Tag the latest commit with the latest version
 
-tm-db is provided as a golang [module](https://blog.golang.org/publishing-go-modules), which rely on git tags for versioning information. 
+cosmos-db is provided as a golang [module](https://blog.golang.org/publishing-go-modules), which rely on git tags for versioning information. 
 
 Tag the changelog commit in master created in step 1 with the latest version.
-Be sure to prefix the version tag with `v`. For example, `v0.6.5` for version 0.6.5.
+Be sure to prefix the version tag with `v`. For example, `v1.0.0` for version 1.0.0.
 This tagging can be done [using github](https://docs.github.com/en/desktop/contributing-and-collaborating-using-github-desktop/managing-commits/managing-tags#creating-a-tag) or [using git](https://git-scm.com/book/en/v2/Git-Basics-Tagging) on the command line. 
 
 Note that the golang modules tooling expects tags to be immutable. 

backend_test.go

@@ -2,7 +2,6 @@ package db
 
 import (
 	"fmt"
-	"io/ioutil"
 	"os"
 	"path/filepath"
 	"testing"
@@ -13,15 +12,14 @@ import (
 
 // Register a test backend for PrefixDB as well, with some unrelated junk data
 func init() {
-	// nolint: errcheck
 	registerDBCreator("prefixdb", func(name, dir string) (DB, error) {
 		mdb := NewMemDB()
-		mdb.Set([]byte("a"), []byte{1})
-		mdb.Set([]byte("b"), []byte{2})
-		mdb.Set([]byte("t"), []byte{20})
-		mdb.Set([]byte("test"), []byte{0})
-		mdb.Set([]byte("u"), []byte{21})
-		mdb.Set([]byte("z"), []byte{26})
+		mdb.Set([]byte("a"), []byte{1})    //nolint:errcheck
+		mdb.Set([]byte("b"), []byte{2})    //nolint:errcheck
+		mdb.Set([]byte("t"), []byte{20})   //nolint:errcheck
+		mdb.Set([]byte("test"), []byte{0}) //nolint:errcheck
+		mdb.Set([]byte("u"), []byte{21})   //nolint:errcheck
+		mdb.Set([]byte("z"), []byte{26})   //nolint:errcheck
 		return NewPrefixDB(mdb, []byte("test/")), nil
 	}, false)
 }
@@ -35,7 +33,7 @@ func cleanupDBDir(dir, name string) {
 
 func testBackendGetSetDelete(t *testing.T, backend BackendType) {
 	// Default
-	dirname, err := ioutil.TempDir("", fmt.Sprintf("test_backend_%s_", backend))
+	dirname, err := os.MkdirTemp("", fmt.Sprintf("test_backend_%s_", backend))
 	require.Nil(t, err)
 	db, err := NewDB("testdb", backend, dirname)
 	require.NoError(t, err)
@@ -302,7 +300,7 @@ func testDBIterator(t *testing.T, backend BackendType) {
 		[]int64(nil), "reverse iterator from 2 (ex) to 4")
 
 	// Ensure that the iterators don't panic with an empty database.
-	dir2, err := ioutil.TempDir("", "tm-db-test")
+	dir2, err := os.MkdirTemp("", "tm-db-test")
 	require.NoError(t, err)
 	db2, err := NewDB(name, backend, dir2)
 	require.NoError(t, err)

cleveldb_test.go

@@ -25,7 +25,6 @@ func TestWithClevelDB(t *testing.T) {
 	t.Run("ClevelDB", func(t *testing.T) { Run(t, db) })
 }
 
-//nolint: errcheck
 func BenchmarkRandomReadsWrites2(b *testing.B) {
 	b.StopTimer()
 
@@ -46,19 +45,22 @@ func BenchmarkRandomReadsWrites2(b *testing.B) {
 	for i := 0; i < b.N; i++ {
 		// Write something
 		{
-			idx := (int64(rand.Int()) % numItems)
+			idx := (int64(rand.Int()) % numItems) //nolint:gosec
 			internal[idx]++
 			val := internal[idx]
 			idxBytes := int642Bytes(idx)
 			valBytes := int642Bytes(val)
-			db.Set(
+			err := db.Set(
 				idxBytes,
 				valBytes,
 			)
+			if err != nil {
+				fmt.Println("couldn't write something: cleveldb_test.go line 53")
+			}
 		}
 		// Read something
 		{
-			idx := (int64(rand.Int()) % numItems)
+			idx := (int64(rand.Int()) % numItems) //nolint:gosec
 			val := internal[idx]
 			idxBytes := int642Bytes(idx)
 			valBytes, err := db.Get(idxBytes)

common_test.go

@@ -3,8 +3,8 @@ package db
 import (
 	"bytes"
 	"encoding/binary"
-	"io/ioutil"
 	"math/rand"
+	"os"
 	"testing"
 
 	"github.com/stretchr/testify/assert"
@@ -67,7 +67,7 @@ func checkValuePanics(t *testing.T, itr Iterator) {
 }
 
 func newTempDB(t *testing.T, backend BackendType) (db DB, dbDir string) {
-	dirname, err := ioutil.TempDir("", "db_common_test")
+	dirname, err := os.MkdirTemp("", "db_common_test")
 	require.NoError(t, err)
 	db, err = NewDB("testdb", backend, dirname)
 	require.NoError(t, err)
@@ -93,7 +93,7 @@ func benchmarkRangeScans(b *testing.B, db DB, dbSize int64) {
 	b.StartTimer()
 
 	for i := 0; i < b.N; i++ {
-		start := rand.Int63n(dbSize - rangeSize)
+		start := rand.Int63n(dbSize - rangeSize) //nolint:gosec
 		end := start + rangeSize
 		iter, err := db.Iterator(int642Bytes(start), int642Bytes(end))
 		require.NoError(b, err)
@@ -122,7 +122,7 @@ func benchmarkRandomReadsWrites(b *testing.B, db DB) {
 	for i := 0; i < b.N; i++ {
 		// Write something
 		{
-			idx := rand.Int63n(numItems)
+			idx := rand.Int63n(numItems) //nolint:gosec
 			internal[idx]++
 			val := internal[idx]
 			idxBytes := int642Bytes(idx)
@@ -136,7 +136,7 @@ func benchmarkRandomReadsWrites(b *testing.B, db DB) {
 
 		// Read something
 		{
-			idx := rand.Int63n(numItems)
+			idx := rand.Int63n(numItems) //nolint:gosec
 			valExp := internal[idx]
 			idxBytes := int642Bytes(idx)
 			valBytes, err := db.Get(idxBytes)

db.go

@@ -15,26 +15,20 @@ const (
 	//   - stable
 	GoLevelDBBackend BackendType = "goleveldb"
 	// CLevelDBBackend represents cleveldb (uses levigo wrapper)
-	//   - fast
 	//   - requires gcc
 	//   - use cleveldb build tag (go build -tags cleveldb)
 	CLevelDBBackend BackendType = "cleveldb"
 	// MemDBBackend represents in-memory key value store, which is mostly used
 	// for testing.
 	MemDBBackend BackendType = "memdb"
-	// BoltDBBackend represents bolt (uses etcd's fork of bolt -
-	// github.com/etcd-io/bbolt)
-	//   - EXPERIMENTAL
-	//   - may be faster is some use-cases (random reads - indexer)
-	//   - use boltdb build tag (go build -tags boltdb)
-	BoltDBBackend BackendType = "boltdb"
-	// RocksDBBackend represents rocksdb (uses github.com/cosmos/gorocksdb)
-	//   - EXPERIMENTAL
+	// RocksDBBackend represents rocksdb (uses github.com/linxGnu/grocksdb)
 	//   - requires gcc
 	//   - use rocksdb build tag (go build -tags rocksdb)
 	RocksDBBackend BackendType = "rocksdb"
-
-	BadgerDBBackend BackendType = "badgerdb"
+	// PebbleDBDBBackend represents pebble (uses github.com/cockroachdb/pebble)
+	//   - pure go
+	//   - use pebble build tag (go build -tags pebbledb)
+	PebbleDBBackend BackendType = "pebbledb"
 )
 
 type dbCreator func(name string, dir string) (DB, error)

go.mod

@@ -1,41 +1,36 @@
-module github.com/tendermint/tm-db
+module github.com/cosmos/cosmos-db
 
-go 1.17
+go 1.19
 
 require (
-	github.com/cosmos/gorocksdb v1.2.0
-	github.com/dgraph-io/badger/v3 v3.2103.2
-	github.com/gogo/protobuf v1.3.2
+	github.com/cockroachdb/pebble v0.0.0-20220817183557-09c6e030a677
 	github.com/google/btree v1.1.2
 	github.com/jmhodges/levigo v1.0.0
+	github.com/linxGnu/grocksdb v1.7.5
 	github.com/stretchr/testify v1.8.0
 	github.com/syndtr/goleveldb v1.0.1-0.20200815110645-5c35d600f0ca
-	go.etcd.io/bbolt v1.3.6
-	google.golang.org/grpc v1.48.0
 )
 
 require (
-	github.com/cespare/xxhash v1.1.0 // indirect
+	github.com/DataDog/zstd v1.4.5 // indirect
+	github.com/HdrHistogram/hdrhistogram-go v1.1.2 // indirect
 	github.com/cespare/xxhash/v2 v2.1.1 // indirect
+	github.com/cockroachdb/errors v1.8.1 // indirect
+	github.com/cockroachdb/logtags v0.0.0-20190617123548-eb05cc24525f // indirect
+	github.com/cockroachdb/redact v1.0.8 // indirect
+	github.com/cockroachdb/sentry-go v0.6.1-cockroachdb.2 // indirect
 	github.com/davecgh/go-spew v1.1.1 // indirect
-	github.com/dgraph-io/ristretto v0.1.0 // indirect
-	github.com/dustin/go-humanize v1.0.0 // indirect
-	github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b // indirect
-	github.com/golang/groupcache v0.0.0-20190702054246-869f871628b6 // indirect
-	github.com/golang/protobuf v1.5.2 // indirect
-	github.com/golang/snappy v0.0.3 // indirect
-	github.com/google/flatbuffers v1.12.1 // indirect
-	github.com/klauspost/compress v1.12.3 // indirect
+	github.com/gogo/protobuf v1.3.2 // indirect
+	github.com/golang/snappy v0.0.4 // indirect
+	github.com/klauspost/compress v1.15.9 // indirect
+	github.com/kr/pretty v0.3.0 // indirect
+	github.com/kr/text v0.2.0 // indirect
 	github.com/pkg/errors v0.9.1 // indirect
 	github.com/pmezard/go-difflib v1.0.0 // indirect
-	go.opencensus.io v0.22.5 // indirect
-	golang.org/x/net v0.0.0-20201021035429-f5854403a974 // indirect
-	golang.org/x/sys v0.0.0-20220227234510-4e6760a101f9 // indirect
-	golang.org/x/text v0.3.3 // indirect
-	google.golang.org/genproto v0.0.0-20200526211855-cb27e3aa2013 // indirect
-	google.golang.org/protobuf v1.27.1 // indirect
+	github.com/rogpeppe/go-internal v1.8.1 // indirect
+	golang.org/x/exp v0.0.0-20220722155223-a9213eeb770e // indirect
+	golang.org/x/net v0.0.0-20220812174116-3211cb980234 // indirect
+	golang.org/x/sync v0.0.0-20210220032951-036812b2e83c // indirect
+	golang.org/x/sys v0.0.0-20220817070843-5a390386f1f2 // indirect
 	gopkg.in/yaml.v3 v3.0.1 // indirect
 )
-
-// Breaking changes were released with the wrong tag (use v0.6.6 or later).
-retract v0.6.5

pebble_test.go

@@ -0,0 +1,50 @@
+//go:build pebbledb
+
+package db
+
+import (
+	"fmt"
+	"os"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+)
+
+func TestPebbleDBBackend(t *testing.T) {
+	name := fmt.Sprintf("test_%x", randStr(12))
+	dir := os.TempDir()
+	db, err := NewDB(name, PebbleDBBackend, dir)
+	require.NoError(t, err)
+	defer cleanupDBDir(dir, name)
+
+	_, ok := db.(*PebbleDB)
+	assert.True(t, ok)
+}
+
+// func TestPebbleDBStats(t *testing.T) {
+// 	name := fmt.Sprintf("test_%x", randStr(12))
+// 	dir := os.TempDir()
+// 	db, err := NewDB(name, PebbleDBBackend, dir)
+// 	require.NoError(t, err)
+// 	defer cleanupDBDir(dir, name)
+
+// 	assert.NotEmpty(t, db.Stats())
+// }
+
+func BenchmarkPebbleDBRandomReadsWrites(b *testing.B) {
+	name := fmt.Sprintf("test_%x", randStr(12))
+	dir := os.TempDir()
+	db, err := NewDB(name, PebbleDBBackend, dir)
+	if err != nil {
+		b.Fatal(err)
+	}
+	defer func() {
+		db.Close()
+		cleanupDBDir("", name)
+	}()
+
+	benchmarkRandomReadsWrites(b, db)
+}
+
+// TODO: Add tests for pebble

prefixdb_test.go

@@ -32,7 +32,7 @@ func taskKey(i, k int) []byte {
 
 func randomValue() []byte {
 	b := make([]byte, 16)
-	rand.Read(b)
+	rand.Read(b) //nolint:gosec
 	return b
 }
 

rocksdb.go

@@ -8,7 +8,7 @@ import (
 	"path/filepath"
 	"runtime"
 
-	"github.com/cosmos/gorocksdb"
+	"github.com/linxGnu/grocksdb"
 )
 
 func init() {
@@ -20,10 +20,10 @@ func init() {
 
 // RocksDB is a RocksDB backend.
 type RocksDB struct {
-	db     *gorocksdb.DB
-	ro     *gorocksdb.ReadOptions
-	wo     *gorocksdb.WriteOptions
-	woSync *gorocksdb.WriteOptions
+	db     *grocksdb.DB
+	ro     *grocksdb.ReadOptions
+	wo     *grocksdb.WriteOptions
+	woSync *grocksdb.WriteOptions
 }
 
 var _ DB = (*RocksDB)(nil)
@@ -32,11 +32,11 @@ func NewRocksDB(name string, dir string) (*RocksDB, error) {
 	// default rocksdb option, good enough for most cases, including heavy workloads.
 	// 1GB table cache, 512MB write buffer(may use 50% more on heavy workloads).
 	// compression: snappy as default, need to -lsnappy to enable.
-	bbto := gorocksdb.NewDefaultBlockBasedTableOptions()
-	bbto.SetBlockCache(gorocksdb.NewLRUCache(1 << 30))
-	bbto.SetFilterPolicy(gorocksdb.NewBloomFilter(10))
+	bbto := grocksdb.NewDefaultBlockBasedTableOptions()
+	bbto.SetBlockCache(grocksdb.NewLRUCache(1 << 30))
+	bbto.SetFilterPolicy(grocksdb.NewBloomFilter(10))
 
-	opts := gorocksdb.NewDefaultOptions()
+	opts := grocksdb.NewDefaultOptions()
 	opts.SetBlockBasedTableFactory(bbto)
 	// SetMaxOpenFiles to 4096 seems to provide a reliable performance boost
 	opts.SetMaxOpenFiles(4096)
@@ -47,15 +47,15 @@ func NewRocksDB(name string, dir string) (*RocksDB, error) {
 	return NewRocksDBWithOptions(name, dir, opts)
 }
 
-func NewRocksDBWithOptions(name string, dir string, opts *gorocksdb.Options) (*RocksDB, error) {
+func NewRocksDBWithOptions(name string, dir string, opts *grocksdb.Options) (*RocksDB, error) {
 	dbPath := filepath.Join(dir, name+".db")
-	db, err := gorocksdb.OpenDb(opts, dbPath)
+	db, err := grocksdb.OpenDb(opts, dbPath)
 	if err != nil {
 		return nil, err
 	}
-	ro := gorocksdb.NewDefaultReadOptions()
-	wo := gorocksdb.NewDefaultWriteOptions()
-	woSync := gorocksdb.NewDefaultWriteOptions()
+	ro := grocksdb.NewDefaultReadOptions()
+	wo := grocksdb.NewDefaultWriteOptions()
+	woSync := grocksdb.NewDefaultWriteOptions()
 	woSync.SetSync(true)
 	database := &RocksDB{
 		db:     db,
@@ -125,7 +125,7 @@ func (db *RocksDB) DeleteSync(key []byte) error {
 	return db.db.Delete(db.woSync, key)
 }
 
-func (db *RocksDB) DB() *gorocksdb.DB {
+func (db *RocksDB) DB() *grocksdb.DB {
 	return db.db
 }
 

rocksdb_batch.go

@@ -3,19 +3,19 @@
 
 package db
 
-import "github.com/cosmos/gorocksdb"
+import "github.com/linxGnu/grocksdb"
 
 type rocksDBBatch struct {
 	db    *RocksDB
-	batch *gorocksdb.WriteBatch
+	batch *grocksdb.WriteBatch
 }
 
 var _ Batch = (*rocksDBBatch)(nil)
 
 func newRocksDBBatch(db *RocksDB) *rocksDBBatch {
 	return &rocksDBBatch{
 		db:    db,
-		batch: gorocksdb.NewWriteBatch(),
+		batch: grocksdb.NewWriteBatch(),
 	}
 }
 

rocksdb_iterator.go

@@ -6,19 +6,19 @@ package db
 import (
 	"bytes"
 
-	"github.com/cosmos/gorocksdb"
+	"github.com/linxGnu/grocksdb"
 )
 
 type rocksDBIterator struct {
-	source     *gorocksdb.Iterator
+	source     *grocksdb.Iterator
 	start, end []byte
 	isReverse  bool
 	isInvalid  bool
 }
 
 var _ Iterator = (*rocksDBIterator)(nil)
 
-func newRocksDBIterator(source *gorocksdb.Iterator, start, end []byte, isReverse bool) *rocksDBIterator {
+func newRocksDBIterator(source *grocksdb.Iterator, start, end []byte, isReverse bool) *rocksDBIterator {
 	if isReverse {
 		if end == nil {
 			source.SeekToLast()
@@ -135,7 +135,7 @@ func (itr *rocksDBIterator) assertIsValid() {
 // moveSliceToBytes will free the slice and copy out a go []byte
 // This function can be applied on *Slice returned from Key() and Value()
 // of an Iterator, because they are marked as freed.
-func moveSliceToBytes(s *gorocksdb.Slice) []byte {
+func moveSliceToBytes(s *grocksdb.Slice) []byte {
 	defer s.Free()
 	if !s.Exists() {
 		return nil

test_helpers.go

@@ -16,7 +16,7 @@ func randStr(length int) string {
 	chars := []byte{}
 MAIN_LOOP:
 	for {
-		val := rand.Int63() // nolint:gosec // G404: Use of weak random number generator
+		val := rand.Int63() //nolint:gosec
 		for i := 0; i < 10; i++ {
 			v := int(val & 0x3f) // rightmost 6 bits
 			if v >= 62 {         // only 62 characters in strChars

types.go

@@ -111,13 +111,14 @@ type Batch interface {
 // var itr Iterator = ...
 // defer itr.Close()
 //
-// for ; itr.Valid(); itr.Next() {
-//   k, v := itr.Key(); itr.Value()
-//   ...
-// }
-// if err := itr.Error(); err != nil {
-//   ...
-// }
+//	for ; itr.Valid(); itr.Next() {
+//	  k, v := itr.Key(); itr.Value()
+//	  ...
+//	}
+//
+//	if err := itr.Error(); err != nil {
+//	  ...
+//	}
 type Iterator interface {
 	// Domain returns the start (inclusive) and end (exclusive) limits of the iterator.
 	// CONTRACT: start, end readonly []byte

util_test.go

@@ -25,11 +25,6 @@ func TestPrefixIteratorNoMatchNil(t *testing.T) {
 // Empty iterator for db populated after iterator created.
 func TestPrefixIteratorNoMatch1(t *testing.T) {
 	for backend := range backends {
-		if backend == BoltDBBackend {
-			t.Log("bolt does not support concurrent writes while iterating")
-			continue
-		}
-
 		t.Run(fmt.Sprintf("Prefix w/ backend %s", backend), func(t *testing.T) {
 			db, dir := newTempDB(t, backend)
 			defer os.RemoveAll(dir)